gotosocial/vendor/codeberg.org/gruf/go-iotools/close.go
kim cde2fb6244
[feature] support processing of (many) more media types (#3090)
* initial work replacing our media decoding / encoding pipeline with ffprobe + ffmpeg

* specify the video codec to use when generating static image from emoji

* update go-storage library (fixes incompatibility after updating go-iotools)

* maintain image aspect ratio when generating a thumbnail for it

* update readme to show go-ffmpreg

* fix a bunch of media tests, move filesize checking to callers of media manager for more flexibility

* remove extra debug from error message

* fix up incorrect function signatures

* update PutFile to just use regular file copy, as changes are file is on separate partition

* fix remaining tests, remove some unneeded tests now we're working with ffmpeg/ffprobe

* update more tests, add more code comments

* add utilities to generate processed emoji / media outputs

* fix remaining tests

* add test for opus media file, add license header to utility cmds

* limit the number of concurrently available ffmpeg / ffprobe instances

* reduce number of instances

* further reduce number of instances

* fix envparsing test with configuration variables

* update docs and configuration with new media-{local,remote}-max-size variables
2024-07-12 09:39:47 +00:00

52 lines
1.1 KiB
Go

package iotools
import "io"
// NopCloser is an empty
// implementation of io.Closer,
// that simply does nothing!
type NopCloser struct{}
func (NopCloser) Close() error { return nil }
// CloserFunc is a function signature which allows
// a function to implement the io.Closer type.
type CloserFunc func() error
func (c CloserFunc) Close() error {
return c()
}
// CloserCallback wraps io.Closer to add a callback deferred to call just after Close().
func CloserCallback(c io.Closer, cb func()) io.Closer {
return CloserFunc(func() error {
defer cb()
return c.Close()
})
}
// CloserAfterCallback wraps io.Closer to add a callback called just before Close().
func CloserAfterCallback(c io.Closer, cb func()) io.Closer {
return CloserFunc(func() (err error) {
defer func() { err = c.Close() }()
cb()
return
})
}
// CloseOnce wraps an io.Closer to ensure it only performs the close logic once.
func CloseOnce(c io.Closer) io.Closer {
return CloserFunc(func() error {
if c == nil {
// already run.
return nil
}
// Acquire.
cptr := c
c = nil
// Call the closer.
return cptr.Close()
})
}